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Ligia oceanica - dark Supposedly the Common Sea Slater (Ligia oceanica) can adapt to its background by changing the colour intensity in its chromatophores - this one had just been hiding in dark seaweed. Common Sea Slater,Isopoda,Ligia,Ligia oceanica,Ligiidae,Oniscidea Click/tap to enlarge Promoted

Ligia oceanica - dark

Supposedly the Common Sea Slater (Ligia oceanica) can adapt to its background by changing the colour intensity in its chromatophores - this one had just been hiding in dark seaweed.

    comments (4)

  1. How ADORABLE, Arp!

    That is a really cool adaptation!
    Posted 2 months ago
    1. Thanks Lisa :o) Its a cool feature, but quite hard to confirm visually and even harder to clearly demonstrate in a photo - this one came out nicely to demonstrate the colours, but of course the critter had no intention of sitting still to allow for an image with acceptable dof/sharpness :-/ Cheers, Arp Posted 2 months ago
  2. Beautiful! Posted 2 months ago
    1. Thanks Ferdy, The recent uploads with the American west coast Ligia by Gary "inspired" me to add these old images :o)
      A Rock Louse, Ligia occidentalis. This poor fellow made the mistake of trying to over winter in a tote that contained our artificial Christmas tree and couldn’t find its way out. The tote was in a crawl space the floor of which is granite that extends to the ocean meters away. A short “crawl” for this fellow when it is warmer. I have tried unsuccessfully to take photos of them before but they are too quick for me quickly disappearing into a crack in the rocks. This fellow was quite large, about 3.5cm! California Sea Slater,Canada,Fall,Geotagged,Ligia,Ligia occidentalis,Rock Louse
      Posted 2 months ago, modified 2 months ago

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''Ligia oceanica'', the sea slater, common sea slater or sea roach, is a littoral woodlouse in the family Ligiidae ("Rock Slaters").

''L. oceanica'' is oval, twice as long as broad and may reach up to 30 millimetres in length, making it one of the largest oniscid isopods. Its colour may vary from grey to olive-green, and it has large compound eyes and long antennae, ⅔ as long as its body.

''L. oceanica'' is found in temperate waters from Norway to the Mediterranean Sea, and.. more

Similar species: Brood Pouch Crustaceans
Species identified by Pudding4brains
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By Pudding4brains

Public Domain
Uploaded Nov 30, 2018.